Bug#886140: visp: FTBFS (big-endian): mbtGenericTrackingDepth tests fail

Source: visp
Version: 3.1.0-1
Severity: serious
Tags: upstream
Justification: fails to build from source (but built successfully in the past)
User: [email protected]
Usertags: mips

Builds of visp for big-endian architectures have been failing lately,
with errors in all 12 mbtGenericTrackingDepth tests.  The details vary
to some extent by architecture, but I suspect the root cause is the
same.  Specifically:

* On the 32-bit big-endian architectures mips and powerpc[*], these
  tests all fail with

    terminate called after throwing an instance of 'std::bad_array_new_length'
      what():  std::bad_array_new_length

  which CTest reports as OTHER_FAULT.  (The mips build also
  encountered six other test failures, which I'll report separately.
  As for m68k[*], that build nominally succeeded only because builds
  there generally run with nocheck in DEB_BUILD_OPTIONS.)

* On s390x, these tests all encountered segmentation faults.

* On ppc64[*], these tests all failed with an unspecified "Exception:
  Other".

Could you please take a look?

Thanks!

[*] Admittedly not a release architecture.